android - Update a Widget when user switches to sleep mode -

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i have created little app widget, , want widget update when user switches sleep mode (or whatever mode called when short-push power button).

i have searched around no avail. tried registering broadcastreceiver, not allowed in widget.

if not possible, means widget has wait updateperiodmillis timeout, that's @ least 30 minutes , kind of breaks user experience.


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